John Deere 643J and 843J Wheeled Feller Buncher Index:

• Contents
  • General Information
    • Safety Information
      • Recognize Safety Information
      • Understand Signal Words
      • Handle Fluids Safely—Avoid Fires
      • Prevent Battery Explosions
      • Prepare for Emergencies
      • Prevent Acid Burns
      • Handle Chemical Products Safely
      • Avoid High-Pressure Fluids
      • Park Machine Safely
      • Support Machine Properly
      • Wear Protective Clothing
      • Work in Clean Area
      • Service Machines Safely
      • Beware of Exhaust Fumes
      • Illuminate Work Area Safely
      • Replace Safety Signs
      • Use Proper Lifting Equipment
      • Remove Paint Before Welding or Heating
      • Avoid Heating Near Pressurized Fluid Lines
      • Service Tires Safely
      • Avoid Harmful Asbestos Dust
      • Practice Safe Maintenance
      • Use Proper Tools
      • Dispose of Waste Properly
      • Use Handholds and Steps
      • Travel Safely
      • Service Cooling System Safely
      • Handle Starting Fluid Safely
      • Prevent Machine Runaway
      • Handle Engine Side Panels Safely
    • Torque Values
      • Unified Inch Bolt and Cap Screw Torque Values
      • Metric Bolt and Cap Screw Torque Values
      • Check Oil Lines and Fittings
      • Service Recommendations for O-Ring Boss Fittings
      • Service Recommendations for Flat Face O-Ring Seal Fittings
      • Service Recommendations for 37° Flare and 30° Cone Seat Connectors
      • Service Recommendations For Flared Connections—Straight or Tapered Threads
      • Service Recommendations for Inch Series Four Bolt Flange Fittings
      • Service Recommendations for Metric Series Four Bolt Flange Fitting
  • Operational Checkout Procedure
    • Operational Checkout Procedure
      • Complete Machine Operational Checkout
        • Gauge and Indicator Checks
        • Brake System Checks
        • Steering System Checks
        • Driving Checks
        • Hydraulic System Checks
        • Cooling System Checks
        • Accessory Checks
        • Cab Components Checks
  • Engine
    • Theory of Operation
      • PowerTechPowerTech is a trademark of Deere & Company.®6.8 L John Deere Engine—Use CTM104, CTM220
      • Alternators and Starting Motors—Use CTM77
      • John Deere Engine Accessories—Use CTM67
      • General Engine Description
      • Engine—Sectional View
    • Electronic Fuel System Operation
      • About This Group
      • Fuel System Operation
      • Primary Fuel Filter Operation
      • Fuel Transfer Pump Operation
      • Final Fuel Filter Operation
      • High Pressure Fuel Pump Operation
      • High Pressure Common Rail (HPCR) Operation
      • Electronic Injector (EI) Operation
    • Electronic Control System Operation
      • About This Group
      • Electronic Control System Terminology
      • Electronic Control System Operation
      • Electronic Control System Overview
      • Monitoring Engine Parameters
      • Measuring Temperature
      • Measuring Pressure
      • Measuring Throttle Position
      • Measuring Engine Speed
      • Electronic Injector (EI) Wiring Harness Connector
      • Engine Control Unit (ECU)
      • Glow Plug Operation
      • Engine Protection
      • Derate Programs
      • Engine Control Unit (ECU) Self-Diagnosis
    • Observable Diagnostics and Tests
      • About This Group
      • JT05801 Clamp-On Electronic Tachometer Installation
      • E1 – Engine Cranks/Won’t Start
        • E1 – Engine Cranks/Won’t Start Diagnostic Procedure
      • E2 – Engine Misfires/Runs Irregularly
        • E2 – Engine Misfires/Runs Irregularly Diagnostic Procedure
      • E3 – Engine Does Not Develop Full Power
        • E3 – Engine Does Not Develop Full Power Diagnostic Procedure
      • E4 – Engine Emits Excessive White Exhaust Smoke
        • E4 – Engine Emits Excessive White Exhaust Smoke Diagnostic Procedure
      • E5 – Engine Emits Excessive Black Or Gray Exhaust Smoke
        • E5 – Engine Emits Excessive Black Or Gray Exhaust Smoke Diagnostic Procedure
      • E6 – Engine Will Not Crank
      • E7 – Engine Idles Poorly
      • E8 – Abnormal Engine Noise
      • E9 – Analog Throttle (A) Does Not Respond
      • E10 – Analog Throttle (B) Does Not Respond
      • F1 – Fuel Supply System Check
        • F1 – Fuel Supply System Check Diagnostic Procedure
      • F2 – Excessive Fuel Consumption
      • F3 – Fuel in Oil
      • D1 – ECU Does Not Communicate with DST or SERVICE ADVISOR
      • D1 – ECU Does Not Communicate with DST or SERVICE ADVISORSERVICE ADVISOR is a trademark of Deere & Company™
        • D1 – ECU Does Not Communicate With DST or SERVICE ADVISORSERVICE ADVISOR is a trademark of Deere & Company™ Diagnostic Procedure
      • D2 – Diagnostic Gauge Does Not Communicate With ECU
      • D2 – Diagnostic Gauge Does Not Communicate With ECU
        • D2 – Diagnostic Gauge Does Not Communicate With ECU Diagnostic Procedure
      • Check Fuel Supply Quality
      • Test for Air in Fuel
      • Check Fuel Supply Pressure
      • Check for Restricted Fuel Return Line
      • Bleed the Fuel System
      • Restarting Engine That Has Run Out Of Fuel
      • Check and Adjust High Pressure Fuel Pump Static Timing
      • Air Filter Restriction Indicator Switch Test
      • Engine Power Test Using Turbocharger Boost Pressure
      • Air Intake System Leakage Test
      • Radiator Air Flow Test
      • Glow Plug Check
  • Electrical System
    • System Information
      • Visually Inspect Electrical System
      • Electrical Circuit Malfunctions
      • High Resistance Circuit
      • Open Circuit
      • Grounded Circuit
      • Shorted Circuit
      • Multimeter
      • Seven Step Electrical Test Procedure
      • Schematic, Wiring Diagram, and Component Location Information
      • Reading a System Functional Schematic
      • Reading a Wiring Diagram
      • Reading a Connector End View Diagram
      • Electrical Schematic Symbols
    • System Diagrams
      • Component Identification Table
      • Electrical System Schematics
      • Battery Specifications
      • Battery Operation
      • Fuse (Blade-Type) Color Codes
      • Replacing Relays and Fuses
      • Fuse and Relay Panel
      • Fuse/Relay Wiring Harness
      • Ground Speed Limiter Wiring Harness
      • Saw Stop Solenoid Wiring Harness
      • Cab Harness Wiring Harness
      • Air Conditioner Wiring Harness
      • Engine Harness
      • Frame Harness
      • Electrical Components Alphabetical Index
    • Sub-System Diagnostics
      • Power Circuit Operational Information
      • Power Circuit Theory of Operation
      • Power Circuit Schematic
        • Power Circuit Diagnostic Procedures
      • Starting and Charging Circuit Operational Information
      • Starting and Charging Circuit Theory of Operation
      • Alternator Operation—95-Amp Bosch
      • Starting and Charging Circuit Schematic
        • Starting and Charging Circuit Diagnostic Procedures
      • ECU and Engine Circuits Operational Information
      • ECU and Engine Circuits Theory of Operation
      • Engine Control Unit (ECU) Circuits Schematics
        • Display Monitor Circuit Diagnostic Procedures
      • Park Brake Circuit Specifications
      • Park Brake Circuit Operational Information
      • Park Brake Circuit Theory of Operation
      • Park Brake Circuit Schematic
        • Park Brake Circuit Diagnostic Procedures
      • Two-Speed Gearbox Theory of Operation
      • Two-Speed Gearbox Circuit Schematic
        • Gear Speed Circuit Diagnostic Procedures
      • Display Monitor Indicator Light and Gauges Circuit Specifications
      • Display Monitor Indicator Light and Gauges Circuit Theory of Operation
      • Display Monitor Indicator Light and Gauges Circuit Schematic
        • Display Monitor and Gauges Circuit Diagnostic Procedures
      • Accumulator Arm (Shear) Circuit Operational Information
      • Accumulator Arm (Shear) Circuit Theory of Operation
      • Controls Circuits Specifications
      • Controls Circuits Operational Information
      • Controls Circuits Theory of Operation
      • Controls Circuits Schematics
      • Controls Circuits Diagnostic Information
        • Controls Circuits Diagnostic Procedures
      • Accessory Circuit Operational Information
      • Accessory Circuit Theory of Operation
      • Accessory Circuit Schematic
        • Accessory Circuit Diagnostic Procedures
      • Light Circuit Operational Information
      • Lights Circuits Theory of Operation
      • Light Circuit Schematic
        • Light Circuit Diagnostic Procedures
      • Air Conditioning Circuit Operational Information
      • Air Conditioning Circuit Theory of Operation
      • Air Conditioning Circuits Schematics
        • Air Conditioning Circuit Diagnostic Procedures
      • Blower Circuit Operational Information
      • Blower Circuit Theory of Operation
      • Reversing Fan Circuit Specifications
      • Reversing Fan Circuit Theory of Operation
      • Reversing Fan Circuit Schematics
        • Reversing Fan Diagnostic Procedures
      • Diagnose Battery Malfunctions
    • Tests
      • Procedure for Testing Batteries
      • Using Booster Batteries—12 Volt System
  • Power Train
    • Theory of Operation
      • Power Train Operation
      • Pump Drive Gearbox Operation
      • Hydrostatic Transmission Operation
      • Hydrostatic Transmission Oil Filter Operation
      • Hydrostatic Pump Operation
      • Hydrostatic Pump Swashplate Operation
      • Multi-Function Valve, Charge Pressure Relief Valve, and Displacement Control Valve Operation
      • Hydrostatic Pump Control Operation—Neutral
      • Hydrostatic Pump Control Operation—Forward
      • Hydrostatic Pump Control Operation—Reverse
      • Hydrostatic Pump Displacement Control Valve Operation—Feedback Linkage
      • Hydrostatic Motor Operation
      • Hydrostatic Motor Operation—Neutral
      • Hydrostatic Motor Operation—Decreasing Displacement (Acceleration)
      • Hydrostatic Motor Pressure Override (POR) Valve Operation
      • Hydrostatic Motor Rate-of-Shift Orifice Operation
      • Hydrostatic Transmission Flushing System Operation
      • Loop Flushing Valve and Motor Charge Relief Valve Operation
      • Hydrostatic Transmission Control Circuit Operation
      • Forward-Neutral-Reverse (FNR) Control Valve Operation
      • Two-Speed Gearbox Operation
      • Service Brake Circuit Operation—Continuous Saw/Shear Machine
      • Brake Accumulator Operation
      • Brake Valve Operation
      • Differential and Differential Lock Operation
      • Differential Lock Solenoid Valve Operation
      • Differential Lock Pump
      • Differential Lock Filter
      • TEAMMATE II Axle Operation
      • Final Drive Operation
      • Axle Outer Seal and Bearing Operation
    • Diagnostic Information
      • Diagnose Hydrostatic Transmission Malfunctions
      • Diagnose Differential Malfunctions
      • Hydrostatic Transmission Schematic—Neutral
      • Hydrostatic Transmission Component Location
      • Service Brake and Park Brake Component Location—Continuous Saw/Shear Machine
      • Differential Lock and Axle Component Location—Continuous Saw/Shear Machine
    • Adjustments
      • JT02156A Digital Pressure/Temperature Analyzer Installation
      • JT05800 Digital Thermometer Installation
      • JT05801 Clamp-On Electronic Tachometer Installation
      • JT07148 Digital Hydraulic Tester
      • Hydraulic Oil Warm-Up Procedure
      • Hydrostatic Transmission Start-Up Procedure
      • Hydrostatic Motor Minimum Displacement Adjustment
      • FNR Control Valve Pedal Adjustment
      • Service Brake Bleed Procedure
      • Service Brake Operation Check
      • Differential Lock Start-Up Procedure
      • Ground Speed Limiter Adjustment
    • Tests
      • Hydrostatic (HST) Neutral Charge Relief Valve Pressure Test And Adjustment
      • Hydrostatic (HST) System Charge Pressure Adjustment and Flow Test
      • Hydrostatic (HST) Pump Pressure Setting and Adjustment
      • Hydrostatic (HST) Motor Begin Regulation Pressure Test and Adjustment
      • Hydrostatic (HST) Motor Pressure Override (POR) Test and Adjustment
      • Hydrostatic (HST) Motor Minimum Displacement Screw Tamper Proof Cap
      • Hydrostatic (HST) Motor Charge Relief Valve Test
      • Hydrostatic (HST) Motor Leakage Test
      • Brake Valve Pressure Test
      • Brake and Pilot Accumulator Precharge Test
      • Differential Lock Pressure Test
      • Ground Speed Limiter Test
      • Axle Boost Pressure Setting
  • Hydraulic System
    • Theory of Operation
      • Main Hydraulic Pump Operation—Continuous Saw/Shear Machine
      • Main Hydraulic Pump Control Operation—Continuous Saw Machine
      • Hydraulic Tank
      • Filler Pump
      • Power Management Valve Operation
      • Saw Pump Operation—Continuous Saw/Shear Machine
      • Continuous Saw Pump Control Valve Operation
      • Continuous Saw On-Off Control Valve Circuit Operation
      • Shear Valve Circuit Operation
      • Brake and Pilot Pump Operation—Shear Machine
      • Brake and Pilot Pump Pressure Compensator Standby Operation—Shear Machine
      • Brake and Pilot Pump Pressure Compensator Going into Stroke Operation—Shear Machine
      • Steering Circuit Operation (Continuous Saw Wheel Steer Machine)
      • Steering Circuit Operation (Continuous Saw Lever Steer Machine)
      • Steering Valve Relief and Anti-Cavitation Check Valve Operation (Continuous Saw Wheel Steer Machine)
      • Main Control Valve Operation—Continuous Saw Machine
      • Load Sense Circuit Operation—Neutral (Continuous Saw Machine)
      • Load Sense Circuit Operation—Steering (Continuous Saw Machine)
      • Load Sense Circuit Operation—Steering and Boom Down (Continuous Saw Machine)
      • Load Sense Circuit Operation—Tilt Back and Accumulator Open (Continuous Saw Machine)
      • Load Sense Relief Valve Operation—Continuous Saw Machine
      • System Relief Valve Operation
      • Circuit Relief Valve Operation
      • Main Control Valve Operation (Shear Machine)
      • Main Control Valve Section Operation—Shear Machine
      • Mid-Inlet Valve (Flow Combiner) Section Operation—Shear Machine
      • Steering Cylinder Operation
      • Cab Tilt Cylinder Operation
      • Boom Lift Cylinder Operation
      • Boom Tilt Cylinder Operation
      • Boom Cylinder Operation
      • Lever Steer Controller Operation
      • Shear Grapple Foot Controller Operation
      • Pilot Controller Operation
      • Return Filter Operation
      • Pilot Pressure Source Manifold
      • Pilot Circuit Operation
      • Pilot Accumulator Operation
      • Park Brake and Differential Lock Solenoid Valve Operation
      • Accumulator Open/Close Solenoid Valve Operation
      • Cooling Fan Hydraulic System Circuits
      • Cooling Fan Pump
      • Cooling Fan Motor
      • Cooling Fan Reverse Valve
    • Diagnostic Information
      • Diagnose Hydraulic System Malfunctions
      • Diagnose Steering Circuit Malfunctions
      • Diagnose Shear Lift, Shear Tilt, and Accumulator Circuit Malfunctions
      • Diagnose Head Grapple Arm Circuit Malfunctions
      • Diagnose Pilot Circuit Malfunctions
      • Standard Hydraulic Schematic Symbols
      • Steering Circuit Component Location
      • Hydraulic Pilot System Component Location
      • Main Hydraulic Schematic—Continuous Saw Machine
      • Main Hydraulic Schematic—Shear Machine
    • Adjustments
      • Main Hydraulic Pump Standby Pressure Adjustment—Continuous Saw Machines
      • Main Hydraulic System Load Sense (LS) Relief and Main Pump Cut-Off Pressure Adjustment—Continuous Saw Machine
      • Hydraulic Main Pump Cut-off Pressure Adjustment
      • Pilot Source Manifold Standby Pressure Adjustment
      • Continuous Saw Pump Standby Pressure Adjustment
      • Shear Pump Maximum Pressure Adjustment
      • Continuous Saw Pump Maximum Pressure Adjustment
      • Continuous Saw Motor Begin of Regulation (BOR) Adjustment
      • Power Management Valve Adjustment
      • Shear Grapple Pilot Controller Pedal Adjustment
      • Hydraulic Oil Clean-Up Procedure Using Portable Filter Caddy
    • Tests
      • Main Control Valve Port Relief Valve Test and Adjustment—Continuous Saw Machines
      • Main Control Valve Load Sense Relief Valve Test and Adjustment—Continuous Saw Machines
      • Main Control Valve System Relief Valve Test and Adjustment—Saw and Shear Machines
      • Main Control Valve Port Relief Valve Test and Adjustment—Shear Machines
      • Cooling Fan Pump Pressure Setting
      • Continuous Saw Pump Flow Test
      • Continuous Saw Pump Case Drain Flow Test
      • Main Hydraulic Pump Flow Test—Continuous Saw Machines
      • Shear Pump Flow Test—Shear Machines
      • Steering Valve Internal Leakage Test—Wheel Steer Machines
      • Hydraulic Cab Tilt Procedure
      • Bleeding Cab Tilt Cylinder and Pump
      • Cylinder Leakage Test
      • Cycle Times Test
  • Heating and Air Conditioning
    • Theory of Operation
      • Proper Refrigerant Handling
      • R134a Refrigerant Cautions
      • Refrigerant Theory of Operation
      • Air Conditioning Circuit Operational Information
      • Air Conditioning Circuit Theory of Operation
      • Blower Circuit Operational Information
      • Blower Circuit Theory of Operation
      • Air Conditioning Circuit Schematic
        • System Operating Checks
      • Receiver/Dryer Operation
      • Expansion Valve Operation
      • Compressor Relief Valve Operation
      • Temperature Control
    • System Operational Checks
      • Air Conditioning Operational Checks
        • Visual Inspection of Components
        • System Operating Checks
    • Diagnostic Information
      • Diagnose Air Conditioning Electrical Malfunctions
      • Air Conditioning Component Location Diagram
    • Adjustments
      • Proper Refrigerant Handling
      • R134a Refrigerant Cautions
      • R134a Component Oil Charge
      • R134a Refrigerant Recovery, Recycling and Charging Station Installation Procedure
      • Recover R134a System
      • Evacuate R134a System
      • Charge R134a System
      • Check Serpentine Belt Tensioner
    • Tests
      • Proper Refrigerant Handling
      • R134a Refrigerant Cautions
      • R134a Air Conditioning System Test
      • Pressure Diagnostic Chart
      • Air Conditioner High/Low Pressure Switch Test
      • Freeze Control Switch
      • Leak Testing
      • Refrigerant Hoses and Tubing Inspection
• Page Number
  • Section 9000
    • Group 01
    • Group 03
  • Section 9005
    • Group 10
  • Section 9010
    • Group 05
    • Group 130
    • Group 140
    • Group 150
  • Section 9015
    • Group 05
    • Group 10
    • Group 15
    • Group 25
  • Section 9020
    • Group 05
    • Group 15
    • Group 20
    • Group 25
  • Section 9025
    • Group 05
    • Group 15
    • Group 20
    • Group 25
  • Section 9031
    • Group 05
    • Group 10
    • Group 15
    • Group 20
    • Group 25